Nipple for nursing-bottles.



No. 667,738. P atonted Feb. l2, mm. a. m. BDSEGBANT.

NIPPLE FOR NURSING BOTTLES.

(Application filed July 9, 1900.)

(No Model.)

Witmeooeo 5 vewto'c at M I I Harman TATES JAMES M. ROSEGRANT, OF NEIV YORK, N. Y., ASSIGNOR OF ONEHALF TO JOHN GIBNEY, OF SING SING, NEWV YORK.

NIPPLE FOR NURSING-=BOTTLES.

EiPECIFIG'ATION forming part of Letters Eatent No. 667,738, dated February 12, 1901.

Application filed July 9, 1900.

To ctZZ whom it nutty concern.-

Be it known that I, JAMES M. RosEesANT, a citizen of the United States, and a resident of the city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Nipples for Nursing-Bottles, of which the following is a specification.

This invention relates to nipples for nursing-bottles for infants, and has for its object a nipple that shall be absolutely non collapsible.

The object is attained by the means set forth in the accompanyingdrawings and this specification.

Figure I of the drawings represents a rubber nipple of the full size and usual form, from which I make no material departure exteriorly. Fig. II shows the nipple madeafter myinvention turned inside out. Fig. III is a vertical cross-section of Fig. I, showing its internal construction. Fig. IV is a crosssection through the line 71, Fig. III, in exaggerated size. Fig. V represents a cross-section through lineZof Fig. III on the same scale as Fig. IV, showing the throat of the nipple in a compressed stat-e.

Various means have been resorted to for making nipples that will not so completely collapse as to prevent the passage of fluid through them. The construction I have adopted consists of providing the interior of the nipple with solid projections, which are preferably made cylindrical, as though they were pieces cut from a sligh tly-tapering round rod, or, considering an amount of taper given them as draft for. molding, they may be likened to frustums of cones, as shown at a, Fig. III. These projections are integral with the material of which the nipple is composed, are fiat on their tops, and should have considerable body as compared with the walls of thenipple. Athicknessseveraltimesgreater than the walls of the nipple and a diameter double the thickness of the projections are good proportions.

In Fig. II, I have shown one of the nipples Serial No. 22,893. \N0 model.)

turnedinside out, and all but one of the projections with which it is provided are visible. The oneinvisible is the third one that occupies 5c the throat d of the nipple, the throat being provided with three in the same horizontal plane, as shown in cross-section in Fig. 1V.

It will be observed in Fig. II that only four projections are provided within the mouthpiece and that they are irregularly distributed over the surface'in such relation to each other that compression of the mouthpiece cannot cause one projection to close in contact with another,norcan any normalpressure bring the sides of the nipple in close contact. Although the projections are compressible, they contain such a quantity of rubber that when they are crushed down as soon as the pressure is relieved they at once expand with consider- 6; able force and to a substantial length, so that if in compression the walls of the nipple should be brought in contact and they should incline to stick together (as theydo very often) the expansive force of the projection would push them apart.

It is plain that whatever excellent results may be obtained for the mouthpiece there might still be danger of the collapsing of the throat d of the nipple, and a particularly advantageous feature of my invention is the placing of a row of these large solid projections within the throat of the nipple. They are-arranged in the same plane as in Figs. IV and V. The effect of these three projections is illustrated in Fig. V. Acompression of the throat will cause spaces to be left, as at b b and c. A pressure that may partly mash down the projections may close the openings 0, but no compression to which a nipple is subject can completelyclose the space I). This figure also illustrates the action of the projections throughout the mouthpiece of the nipple.

Having described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

1. A nipple fora nursing-bottle having cylindrical projections on the inside, said projections having several times the thickness of the Walls of the nipple and a flat top in di- I Signed at Sing Sing, in the county of Westameter greater than the thickness of the proohester and State of New York, this 2d day to jeetions, substantially as herein set forth. of July, A. D. 1900.

2. A nipple fora nursing-bottle, with a con- 5 treated throat, having three projections of the form herein shown disposed at equal distances Witnesses: apart in the same horizontal plane within the ELLIOT WILLIAMS, said throat, substantially as herein set forth. ALBERT XV. HENDRIOKSON, Jr.

JAMES M. ROSEGRANT. 

